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22 Cards in this Set
- Front
- Back
- 3rd side (hint)
What does the nucleus do? |
The nucleus controls all the cell's activities |
Not brain. |
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What occurs in the cytoplasm? |
The cytoplasm is where chemical reactions take place. |
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What is the purpose of the cell membrane? |
The cell membrane controls the movement of materials in and out of the cell. |
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What is mitochondria the site of? |
Mitochondria is the site of respiration |
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What occurs in the ribosomes? |
Ribosomes are where protein synthesis occurs |
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What is the purpose of a cell wall? |
A cell wall supports a plant cell |
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What is a cell wall made from? |
Cellulose |
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What is the purpose of chloroplasts? |
This is the site of photosynthesis, where light energy is absorbed to make food. |
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What does the chloroplasts contain? |
Chlorophyll |
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What is the point of a vacuole? |
A vacuole stores sap. |
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List the cells features found in a plant cell only! |
Cell Wall Chloroplasts Vacuole Cytoplasm Nucleus |
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How is DNA stored in a bacterial cell? |
Bacterial cells do not have nuclei, which means that the DNA and genetic material float around in the cytoplasm. |
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What is the main difference to us between a bacteria and a bacterial colony. |
We can see colonies with the naked eye, a single bacteria requires a microscope. |
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Why does a sperm cell contain so many mitochondria? |
Sperms cells require alot of energy as they have to move. |
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What have gland cells specialised to do? |
The have specialised with a lot of ribosomes to produce enzymes. |
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What does the root hair cell do to adapt to be the best for its use? |
It has an increased surface area which means it can take in more water for the plant. |
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Provide the definition for diffusion |
Diffusion is the movement of fluids from an area of high concentration to an area of low concentration. This is called moving down the concentration gradient. |
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Describe how molecules behave in fluids and suggest a reason why. |
They move randomly because of the energy they have. |
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What is the net movement when it comes to cells? |
The net movement is the overall number taken from an area of high concentration to an area of low concentration |
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In diffusion, what happens when the concentrations are very low and very high? |
Diffusion happens quicker |
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What moves fluids down the concentration gradient? |
Diffusion |
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List 3 examples of where diffusion takes place. |
-oxygen into cells of the body from the bloodstream for respiration. -carbon dioxide into photosynthesising plant cells. -amino acids into the gut for digestion |
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